Picasso gets "tunnel" optics for LED tail light

June 04, 2013 // By Christoph Hammerschmidt
At the Geneva motor show, carmaker PSA Peugeot Citroën introduced the Technospace concept vehicle based on its C4 Picasso. With a novel technology from lighting company Hella, the LED tail lights of the van create a distinctive light signature.

The tail lights and brake lights are formed by two LED modules consisting of 15 LEDs each. A thick-walled optical lens combined with a recessed and a protruded semi-transparent mirror implements what Hella calls a 3D tunnel optical module: If the light from the LEDs hits the protruded semi-transparent mirror, it is partially reflected to the outside. The remaining light is directed to the recessed semi-transparent mirror reflected again. This creates an impression of a three-dimensional tunnel effect though the tail light assembly only features a rather slim design.

The further signal functions of the tail light assembly are implemented in conventional lighting technology. The basic version is also available as a purely incandescent version.